aroTHERM air to water heat pumps

aroTHERM 5, 8, 11 & 15kW

  • Four models in range
  • Compact size for easy siting
  • Quiet Mark accredited


Air-to-water heat pumps are becoming an increasingly popular choice for those looking to install renewable products in the home. The main advantage of air-to-water heat pumps is that they

can help safeguard against the fluctuations in oil and LPG prices that can leave homeowners vulnerable to the ever-rising costs of heating the home.

The pumps can be integrated into UK heating systems with ease, causing minimal disruption to

the homeowner. They also eliminate the need for on-site fuel storage and can be used as part of an efficient all-electric heating solution.

aroTHERM is Vaillant’s second generation air-to-water heat pump range. Developed in line with the exacting standards and precision engineering you would expect when you choose Vaillant.

What’s more, with a Quiet Mark award you can be assured knowing the aroTHERM air to water heat pump is one of the most understated miracles of engineering we’ve ever produced.

Features & Benefits

With 5, 8, 11 and 15kW models available, the aroTHERM range offers a solution for many types of property.

  • Awarded Quiet Mark approval.
  • To achieve optimum performance, a suitable home will already be well insulated and have a low heat loss. Your installer should carry out a full heat loss calculation taking into consideration the age and size of your property to determine which model is best suited to your home.
  • Normally, changing to an air to water heat pump system requires an up to the radiators to maximise efficiency, and installation can take between 3-5 days.
  • Compact dimensions for flexible siting within a garden
  • High efficient performance with a co-efficient performance (CoP) of 4.7 (meaning for every 1kW of electrical energy used 4.7kW of heat energy are generated) (measured at air 7 degrees and water 35 degrees)
  • Advance inverter driven compressor ensures even more efficient operation all year round
  • MCS accredited system and potentially eligible for funding
  • Weather compensating controls included as standard



Product dimensions, width1103 mm1103 mm
Product dimensions, height975 mm1375 mm
Product dimensions, depth463 mm463 mm
Net weight126 kg165 kg
Pollution rating22
Minimum operating pressure0.1 (1.0) Mpa (bar)0.1 (1.0) Mpa (bar)
Maximum operating pressure0.3 (3.0) Mpa (bar)0.3 (3.0) Mpa (bar)


Alternative products

Alternative products

aroTHERM 5,8,11 and 15kW